Pump



' above the casing 5.

ofthe cylinder face is prevented and conse- -quently uneven Wear is also precluded.

Nonr with a View of moving the piston Within' the cylinder it will be noted. that I employ a pair oit links 12 which haveone of their ends pivotally connected with the post 11 While their opposite ends are similarly secured to the ends of a pair of spaced arms 13. It is 'to be, here noted that the links 12 are preferably o'tl a greater length 'than the arms 13 and these latter are secured to a shaft llt extending transversely of a housing 15 which latter is mounted Attached to the shaft at a point beyond said housing is a crank 1G of any desirable type by means of which the shaft may be oscillated.

Thus it Will be obvious that in order to effect a movement ot' the piston 7 an operator Will only lind it necessary to move the crank 16 through a certain areand the crank is so disposed that this arcuate 1nove ment occurs in a plane and direction in which the operator is most readily capable of moving the same so that; this operation of the parts is etlectcd in the `asiest possible manner, it being further noted, in thisvcon'n nection, that due to the fact that the arms 13 are of a shorter length'than the links 12, an operator gains the benefit of the best possible leverage.

Now with a view of assuring an even flow during all stages of the pistons movement it Will be seen that the base 17 ot the housing 15 is ot' a slightly larger size than the casing 5 so that an vvenlarged chamber 18 is formed at this point which obviously prevents any back pressure as the piston moves towards the end of the casing. more, the housing 15 acts in the nature of a pressure chamber, it being seen that the nozzle 19 has its inner end in communication with the interior'of the housing and in a plane adjacent the plane occupied by the shaft 14C whereby the Huid in its passage through the pump, casing and nozzle will cause the parts of t-he mechanism to remain properly lubricated.` :In 'order to properly regulate the workingstroke of the piston 7 to insure the lioW of a predetermined amount of fluid from the nozzle 1S) andlalso to proi vide a guide member lor the;y said piston7 it Will be seen that I attach a rod 20 to the post 11 and this rod projects into a tubular extension 21 forming a part of the housing 15. Adjacent the upper end of the extension there is mounted a stop member, which in the present embodiment ot the invention embraces a screv-threadcd lug '222 which is adjustable with respectl to ine txtended portion ot the housing and which may bc retained against movement by means of a lock nut. 'lhus the working stroke ot' thc piston ii limited at all times by contact being elfeeted between the rod 2() and the stop member Further-A Lavare? and the piston is also guided in its movements incident to the slidable engagement between the rod and extension'within which it is projected, it being obvious that by means of this construction any tendency of the parts to bind avoided and that the piston stroke may at all times be adjusted to insure of the discharge of a proper quantity of fluid from the pump upon the mechanism of the latter being operated. Also it is to be noted that any binding tendency of the piston is further prevented by the disposition of the valves 1U, as alm'estated7 and by the use of the pair ot' links li), disposed one to cach side ot' the post 1l.

It will be appreciated in. actuatingr the pump that the operator simply grasps 'the crank 16 and swings the saine in one direction until the piston reaches its limit ofV movement. During this operation the l'lnid Within the casing und below the piston will vbe forced through the openings 9 of the latter' and past the valves l() ther-cmc to occupy a position above the piston. Upon the operator reversing the movement of the crank 1G, the valves 10 will bc seated and the fluid above the piston will be forced upwardly and be discharged from the nozzle 14, which discharge will continue in the form of an even flow incident to the provision of the housing 15 providing the pressure chamber and furthermore due to the fact that no back pressure can possibly occur incident to the enlarged space 18 provided by the base 17Iof the said housing. This discharge of fluid from the nozzle will continue until thev rod 2O engages the stop member upon which occurrence, the. flow willcease Without any material after-drip .incident to the tact that this is prevented by preferably providing a short length of tube 23 Within the outer end of the nozzle and the inner end of which tube forms a baille 24. During the aforedescribed movement of the piston 7 the valve 8 will obviously be unseated and the space below the said piston will be filledwith fluid but upon the rod engaging the stop the valve 8 Will immediately close so that upon the piston being again returned to its normal position the major portion of this fluid will lie at a point above the piston and this operation may obviously be repeated as often as it is desired.

With a view of applying the pump to the receptaelel prefer to utilize a metallic bung 25 which is slidably mounted upon the tube (j and may be secured in :in v desired position by la set screw 213. Thus l single length of pipe may be utilized and the inner end of the same may be inserted into the receptacle 9.7 to a point at which it engages the lower fact thereof and suhsequentito this operation im hung Q5`may be screwed into place, after which the same is tightened .-mally serves as a platform upon which the to said piston, a crank fluid receiving receptacle is positioned and it is obvious that in the event of any of the fluid being spilled from the latter this fluid will be returned through the opening in the an, bore of the tube and to the receptacle etween the opposed faces of the bung and pi e.

L.lhus all of the objects of this invention are accomplished and it will be appreciated that numerous modifications of structure may readily be resorted to without in the slightest departing from the spirit of the invention as defined by my claims which are:

1. A ump including a piston, a pair of links aving one of their ends connected having a Swingin movement of less than 360 connected with Aso the opposite ends of said links and a casing enclosing said'piston, links and crank.

A' plump including a casing, a piston within t e same, a post secured to lends of said links,

said pisv ton, links having their inner ends movably connected with said post and disposed u on opposite sides thereof, a shaft extending transversely of said casing, a pair of spaced arms connected with said shaft and having their ends in turn connected with the outer a rod secured to said post and extending between said links and arms, and means adapted to be engaged by said rod and acting as a stop for the same.

3. A pump including a casing', a nozzle lconnected with said casing and a tube disposed within the outer and providing a baffle within the same.

4. A pump, including a casing formed with` intake extending transversely of said casing and to one side of the axis thereof, a piston movable within said casing, a rod secured to said piston, lguiding means forming a part of said casing and cooperating with said rod, a pair of crank arms secured to said shaft and extending one to each side a pair of links having their upper ends attached to said' crank arms, their lower ends b'eing rockingly secured to said piston.

Signed at New ork, New York and State of New York, this. 15th day of March, A. D. 1923.

HARRY JACKSON. l

end of said nozzle in the county of and outlet openings, a shaft 0f said rod, 

